1
: an abnormal infiltration and excess accumulation of serous fluid in connective tissue or in a serous cavity

called also dropsy

2
a
: watery swelling of plant organs or parts
b
: any of various plant diseases characterized by such swellings

Examples of edema in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If fluid starts pooling in your lungs (known as high-altitude pulmonary edema) or in your brain (high-altitude cerebral edema), get medical attention as soon as possible. — Katie Hill, Outdoor Life, 3 Sep. 2026 The autopsy also found Martinez suffered pulmonary and mild cerebral edema, a potentially deadly condition where excess fluid accumulates in the lungs and brain. — Perry Vandell, USA Today, 12 Aug. 2026 An eye edema is swelling in part of the eye caused by a buildup of excess fluid, which can affect vision and may result from injury, inflammation, infection or underlying medical conditions. — Samantha Agate, Fort Worth Star-Telegram, 3 Aug. 2026 Creech has a large stomach aneurysm, edema and Type 2 diabetes. — Kevin Fixler, Idaho Statesman, 10 July 2026 See All Example Sentences for edema

Word History

Etymology

New Latin, from Greek oidēma swelling, from oidein to swell; akin to Armenian aytnu- swell, Old English ātor poison

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of edema was in the 15th century

Browse Nearby Words

Cite this Entry

“Edema.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/edema. Accessed 26 Sep. 2026.

Kids Definition

: an abnormal collection of watery fluid in a bodily tissue or cavity

Medical Definition

edema

noun
ede·​ma
variants or chiefly British oedema
plural edemas or chiefly British oedemas also edemata
-mət-ə
or chiefly British oedemata
: an abnormal excess accumulation of serous fluid in connective tissue or in a serous cavity

called also dropsy

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